[Batfink (Peter)]

Hi, Just need some clarification when I try to collimate my 8" collapsable, I have a cheshire and the first step, using the secondary screws, is to center the secondary so the reflected image of the donut on the primary is centered under the fuzzy cross hairs, right?, then using the primary screws center the reflected dot of the cheshire also under the cross hairs, right?.

Now if I do the first step with cheshire then swap it with a simple collimation cap the reflection of the primary mirror clips in the secondary is off, if I re-adjust so the reflected image of the primary mirror clips are nice and even in the secondary using the cap then the reflected image of the donut is off when I use the cheshire again.

As far as I can tell the cross hairs are nicely centered in the cheshire and the donut is centered on the primary.

If some one could clear things up I'd appreciate it.
Thanks Peter.